Texture.cpp

#include <iostream>

#include "Texture.hpp"
#include "stb_image.h"

Texture::Texture(const std::string &path, const char *type)
    : m_Type(type), m_RendererID(generateRendererID()) {

  // set the texture wrapping/filtering options (on the currently bound texture
  // object)
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

  /*
  load and generate the texture
  NOTE: Last argument to force the number of channels, **0 to not force**
  */
  stbi_set_flip_vertically_on_load(true);
  int width, height, channelNumber;
  const auto m_LocalBuffer =
      stbi_load(path.c_str(), &width, &height, &channelNumber, 4);

  if (!m_LocalBuffer) {
    std::cerr << "Failed to load texture from file " << path << std::endl;
    exit(1);
  }

  glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA,
               GL_UNSIGNED_BYTE, m_LocalBuffer);
  glGenerateMipmap(GL_TEXTURE_2D);

  stbi_image_free(m_LocalBuffer);
  // Unbinding texture
  Unbind();
}